CAJ | 학술논문

采用循环伏安法在滴涂碳纳米管的电极表面制备了聚吡咯/K_4Fe(CN)_6复合膜,研究了该电极的电化学性质及对NO_2~-的电催化还原.结果表明,固定于聚吡咯膜中的K_4Fe(CN)_6作为电子递质与碳纳米管和聚吡咯对NO_2~-电还原具有协同催化作用,安培法检测NO_2~-的线性范围为1.5×10~(-6)～1.8×10~(-3) mol/L,检出限为3.0×10~(-7) mol/L,该法已用模拟水样中NO_2~-的测定.
채용순배복안법재적도탄납미관적전겁표면제비료취필각/K_4Fe(CN)_6복합막,연구료해전겁적전화학성질급대NO_2~-적전최화환원.결과표명,고정우취필각막중적K_4Fe(CN)_6작위전자체질여탄납미관화취필각대NO_2~-전환원구유협동최화작용,안배법검측NO_2~-적선성범위위1.5×10~(-6)～1.8×10~(-3) mol/L,검출한위3.0×10~(-7) mol/L,해법이용모의수양중NO_2~-적측정.
A Fe(CN)_6~(4-) doped polypyrrole film was fabricated onto the surface of the MWNT dropped composite ceramic electrode (CCE) via electrochemical polymerization. Its electrochemical behavior towards nitrite reduction was investigated using cyclic voltammetric and amperometric techniques. The experimental results showed that the resulting electrode exhibited high sensitivity towards the reduction of nitrite. Under the optimal conditions, the cathodic peak current showed a linear relationship with the concentration of nitrite in the range from 1.5×10~(-6) to 1.8×10~(-3) mol/L with a detection limit of 3.0×10~(-7) mol/L. This method has been applied to the determination of nitrite in stimulant water samples.